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A loud yell you make when you just totally roasted someone and they're too embarrassed to speak.
'Ka-Burn!' I yelled after my cousin called me a fat tomato.
My friend said I was a 'disgusting human being,' so I did a Ka-Burn right in the middle of lunch.
After my teacher said my essay was 'worse than a soggy taco,' I did a Ka-Burn so loud the principal looked up.